JP7446607B2 - Handle structure of packaging box - Google Patents

Description

The present invention relates to a handle structure for a packaging box that can relieve pressure applied to fingertips when carrying the box.

When distributing various goods such as food and daily necessities, packaging boxes of some kind are often used. The main material for this packaging box is cardboard, but if water resistance or durability is required, synthetic resin board may be used. FIG. 9 shows an example of the shape of a packaging box that has been widely used in the past. This packaging box is the simplest type, with four side plates arranged in a rectangular shape, the bottom of which is covered by a bottom plate, and the opening at the top can be covered by an upper outer flap and an upper inner flap. , the boundaries between both flaps and the side panels are pre-fabricated with creases, and the upper inner flap is usually closed first. In consideration of manual portability, there is a U-shaped cut cut in the upper part of the side plate, and by pushing the handle plate inside, a handle hole is formed into which you can insert your finger. Ru.

Examples of technological developments related to such handles for packaging boxes include the documents listed below, among which Patent Document 1 discloses a structure that can prevent breakage of the end portion of a handle hole in a packaging box. A first cut line extending horizontally is formed in the center of this handle hole, and it is further composed of three folded pieces arranged horizontally both above and below this first cut line. A total of six folded pieces cover the handle hole. Among these folding pieces, the "upper center folding piece" and the "lower center folding piece" located in the center reach a position farther away from the first incision line than the folding pieces on both sides thereof. As a result, of the three folded pieces lined up horizontally, the one in the center extends farthest, giving the overall appearance a convex shape. By providing a step in the handle hole in this way, when a finger is passed through the handle hole, the load is also received at the center, which reduces the load on the ends and prevents breakage.

The following Patent Document 2 discloses a packaging container that can improve the strength of the handle attachment portion of the container body without using a separate member. In this container body, a tongue piece partitioned by a cut is formed on the two opposing sides, and the tongue piece is bent upward inside the container body to form an overlapping part where the sides and the tongue piece are in contact with each other. . Then, by providing two through holes in this overlapping part and incorporating a handle such as a string using these through holes, the handle can be locked at the overlap part where the side surface and the tongue piece are lined up. This naturally improves the strength of the part where the handle is attached.

In addition, Non-Patent Document 1 is a design registration for a packaging box, which is characterized by the shape of the hand hole provided on the wall of the packaging box resembling the face of a small animal, giving a good impression to consumers. We can expect that. In addition, a groove is pre-formed between the left and right protrusions (ears) at the top of the hand hole, making it easier for the hand hole to bend inward, making it easier to open the hand hole. is easy.

Japanese Patent Application Publication No. 2019-123546 JP2009-67442A Design Registration No. 1589249

As shown in Figure 9, it is widely known to form a handle hole by cutting a U-shaped cut in the side plate of a packaging box. It is swingable. As a result, when actually carrying the packaging box, the top edge of the handle hole (the base of the handle plate) comes into strong contact with your fingers, but the top edge of this handle hole is a narrow line. Since the contact area with the fingers is limited, the pressure acting on the fingers increases, causing great pain to the person. In recent years, home delivery of drinking water has become widespread due to the rise in health consciousness and the expansion of online shopping, and there are more opportunities for consumers to handle heavy packaging boxes containing drinking water themselves. Countermeasures that can alleviate the pain caused by this are eagerly awaited.

As a measure to alleviate this pain, a method of attaching some kind of handle as in the above-mentioned Patent Document 2 is very useful. However, when using some kind of accessory parts such as this handle, not only does the cost increase by that amount, but also the installation work is required, which inevitably increases the manufacturing cost. Therefore, it would be desirable to be able to reduce pain while minimizing the impact on manufacturing costs without using any accessory parts.

The present invention was developed based on the above-mentioned circumstances, and aims to provide a handle structure for a packaging box that can reduce the pain of carrying it and also suppress an increase in manufacturing costs.

The invention according to claims 1 and 2 for solving the above problems includes a plurality of side plates arranged to surround an internal space in which various contents are housed, and a bottom plate that closes a lower part of the internal space. In the packaging box, the packaging box has an upper inner flap and an upper outer flap that close the upper part of the inner space, and the two side plates facing each other with the inner space interposed therebetween have a cut-like shape to form a handle hole. A cutting line is provided, and the inside of the area surrounded by the cutting line becomes a handle plate, and the upper inner flap is connected to the upper end of the side plate where the handle plate is arranged, and the upper inner flap is provided with a falling area that falls below the upper end of the side plate when the internal space is closed, and the upward movement of the falling area can be restricted by restraint means, and the falling area is directed toward the internal space. One feature of the handle structure for a packaging box is that the handle plate pushed in comes into contact with the falling area, thereby restricting the upward movement of the handle plate.

The packaging box according to the present invention, like conventional packaging boxes, has a shape that surrounds an internal space for accommodating various contents, and is usually rectangular. The sides are composed of a plurality of side plates arranged in a ring shape, and a bottom plate is arranged so as to close the lower part of the internal space. Furthermore, the upper part of the interior space is closed off by a flap extending from the upper end of the side panel, and there are two types of flaps: an upper inner flap that enters the inner space of the box, and an upper outer flap that covers it. When the internal space is closed, only the upper outer flap is exposed to the outside. In the present invention, the material is not limited to cardboard, and can be replaced with a synthetic resin board, etc., and the shape of the packaging box is also flexible, and is not limited to rectangular parallelepipeds, cubes, etc.

The handle holes are gaps for inserting fingers when carrying the packaging box manually, and are no different from conventional handle holes, which are provided in two side plates facing each other with an internal space in between. The handle hole is formed by cutting a cut in the side plate and pushing the inside of the cut into the inner space of the packaging box. In the present invention, this cut is called a cutting line, and the area inside the area surrounded by the cutting line is called a handle plate, but the handle plate is not separated from the side plate even after being pushed. Therefore, the cutting line will be U-shaped instead of annular, and the line connecting both ends of this cutting line will be the axis of swing of the handle plate, but this axis shall be located at the upper end of the handle hole. . In addition, the upper inner flap, rather than the upper outer flap, is connected to the upper end of the side plate where the handle hole is formed.

The fall area refers to the part that falls below the base of the upper inner flap when the internal space is closed, and must be placed above the inside of the handle hole. Therefore, when the handle plate is pushed in, the handle plate eventually protrudes in a substantially horizontal direction and comes into contact with the falling area, preventing it from moving upwards. When a finger is inserted into the handle hole in this state, the finger and the handle plate come into contact not in a linear manner but in a planar manner, and the contact area between the two increases, so that the pressure acting on the finger is alleviated. Note that the contact point between the handle plate and the falling area is approximately 30 degrees above and below the horizontally protruding state of the handle plate.

The specific shape and size of the fall area can be freely determined; for example, the fall area may be the area excluding the root of the upper inner flap, or a cut may be made in the center of the upper inner flap. However, it is also possible to make only the inside part protrude downward and use it as a fall area. In either case, it is sufficient if the movement can be restricted by contacting the handle plate. When carrying a packaging box, the load is also transmitted to the fall area, so it is necessary to ensure appropriate strength.

The restraining means serves to prevent the falling area from floating up after the upper inner flap and upper outer flap are closed. By properly functioning this restraining means, when the handle plate and the falling area come into contact, the falling area is pushed up by the reaction force and the handle plate is prevented from moving. Various restraint methods can be selected, such as inserting a columnar member between the falling area and the upper outer flap, or integrating the falling area with the side plate, but reliability and manufacturing may vary. It is desirable to have one that takes cost into consideration.

In this way, in a packaging box composed of a side plate, a bottom plate, an upper inner flap, an upper outer flap, etc., a cut is provided in the two opposing side plates to form a handle hole, and an upper inner flap is formed. By providing a falling area in a part of the flap and further providing restraint means to restrict the movement of the falling area, the handle plate pushed in to form the handle hole can be horizontally moved by contact with the falling area. It will remain outstanding. Therefore, when the packaging box is carried by inserting the fingers into the handle holes, the fingers and the handle plate come into surface contact over a wide range, which alleviates the pressure exerted on the fingers and reduces pain.

The invention according to claim 1 has a feature relating to a specific example of the restraining means, and the upper inner flap includes a root region that is arranged to be inclined downward when the internal space is closed, and a root region of the root region. a tip region disposed generally horizontally at the tip, the falling region being the tip of the root region or the entire tip region, and the restraint means being located at an outer edge of the tip region; It is characterized by being an engaging portion that fits into a step formed in the contents. The upper internal flap here is divided into a side close to its root (connection point with the side plate) and a tip side away from the root, of which the root side is called the root area, and the opposite tip side is called the distal area. shall be taken as a thing. Therefore, the root region is arranged so as to be inclined downward from the upper end of the side plate, and the forward region beyond the root region projects in a substantially horizontal direction.

The engaging portion serving as the restraining means points to a partial section of the outer edge of the forward region, and by bringing this section into contact with a step formed in the contents, the falling region is prevented from floating. Note that "steps formed in the contents" refers to places that protrude outward in the horizontal direction on the sides of the contents, as well as some kind of dents. In a bottle, an example is a place where a cap is fitted. In this case, by bringing the engaging portion (a part of the outer edge of the front region) into contact with the bottom surface of the cap, the front region cannot move upward. Therefore, in this invention, the shape of the upper inner flap and the arrangement of the engaging portion are determined depending on the shape of the contents and the method of containing them.

The invention according to claim 2 also has a feature relating to a specific example of the restraining means, and the falling area is a tongue piece partitioned by a cut-like division line formed on the upper inner flap, and the tongue piece is "crossed". By bending it in a ``'' shape, the middle part drops downward, and a constriction part is provided in the middle of the partition line that enters toward the center of the tongue piece, and the restraint means prevents the tongue piece from falling downward. This is a protruding surface provided on the cross section formed by the tongue, and this protruding surface is located at the outer edge of the constriction, and when the tip side of the bent tongue comes into contact with the protruding surface, the bending is maintained. Features.

The fall area here is the tongue provided on the upper inner flap. The tongue piece is located inside the cut made in the upper inner flap, and by pushing down the tongue piece a falling area is formed, but the tongue piece is naturally placed near the top of the handle hole. Furthermore, the outer edge of the tongue has two cuts that extend parallel to each other starting from the base of the upper internal flap, and the two are tied at the end, which naturally results in the tongue becoming band-shaped. However, because the incision is not annular, the tongue is not separated from the upper medial flap. Note that this cut will be referred to as a partition line. When pushing the tongue down toward the internal space, it is not simply tilted from the base to the tip, but the middle part is bent, creating a shape similar to a "dog" turned sideways. . In addition, the section where two lines of the partition line extend approximately parallel to each other is not a simple straight line, but is twisted in a zigzag manner in the middle, and a constricted portion that locally extends toward the center of the tongue piece is provided.

The protruding surface that serves as the restraint means is a cross section formed along the division line after pressing down the tongue, and is a section corresponding to the outer edge of the neck and facing the base of the tongue. This is the place where Naturally, the protruding surface is located on the outside of the partition line (on the side that is not the tongue piece). By bringing the tip side of the bent tongue into contact with this protruding surface, the bending is maintained. By providing the constricted portion, the tip side of the tongue piece can ensure a width that allows it to come into contact with the protruding surface.

According to the invention described in claims 1 and 2 , in a packaging box composed of a side plate, a bottom plate, an upper inner flap, an upper outer flap, etc., a handle hole is formed in two side plates facing each other. By providing a cut for the handle plate, a fall area in a part of the upper inner flap, and a restraining means to restrict the movement of the fall area, the handle plate that was pushed in to form the handle hole can be It will maintain a horizontally protruding state due to contact with the falling area. Therefore, when the packaging box is carried by inserting the fingers into the handle holes, the fingers and the handle plate come into surface contact over a wide range, which alleviates the pressure exerted on the fingers and reduces pain.

As a result, consumers can easily carry heavy items such as packaging boxes containing unopened bottles, contributing to improved safety. In addition, the present invention does not require any accessories, and can be realized simply by machining predetermined cuts in the plate material constituting the packaging box, thereby suppressing an increase in manufacturing costs.

As in the invention as claimed in claim 1 , the upper inner flap is divided into a root region and a front region, and the root region is arranged so as to be inclined downward to provide a fall region. By using an engaging part located at the outer edge of the forward area and fitting this engaging part into a step formed in the contents, movement of the falling area can be reliably regulated. In this invention, it is necessary to arrange the engaging portions according to the contents, and the shape of the packaging box depends on the contents.

According to the invention according to claim 2 , in addition to using the tongue piece formed on the upper inner flap as the falling area, the restraining means uses a protruding surface located in the cross section formed by the tongue piece falling, By bringing the tip side of the bent tongue into contact with this protruding surface, movement of the tongue can be reliably regulated. Note that the present invention functions as a single packaging box without depending on the contents.

FIG. 1 is a perspective view showing an example of the shape of a packaging box according to the present invention, and the lower part of the figure shows a cross-sectional structure. FIG. 2 is a perspective view showing the packaging box of FIG. 1 in a state before the upper inner flap is folded, and depicts its cross-sectional structure and overall shape. FIG. 2 is a perspective view showing the packaging box of FIG. 1 after the upper inner flap is folded; the upper part of the figure is before the contents are contained, and the lower part of the figure is after the contents are contained. FIG. 2 is a perspective view showing a state in which contents are stored in the packaging box of FIG. 1 and a handle plate is further pushed in, and depicts its cross-sectional structure and overall shape. FIG. 2 is a perspective view showing an example of the shape of a packaging box having a configuration different from that of FIG. 1, and is a form that accommodates only one large-sized item. FIG. 6 is a perspective view showing a state in which the contents are stored in the packaging box of FIG. 5, with the upper part of the figure being before the handle plate is pushed in, and the lower part of the figure being after being pushed in. FIG. 6 is a perspective view showing an example of the shape of a packaging box having a configuration different from that of FIGS. 1 and 5, in which a tongue piece is provided near the center of the upper inner flap. The details of the tongue piece are shown at the bottom of the figure. 8 is a perspective view showing a state in which the tongue piece of the packaging box of FIG. 7 is bent, the upper part of the figure is before the handle plate is pushed in, and the lower part of the figure is after the handle plate is pushed in. FIG. FIG. 2 is a perspective view showing an example of the shape of a packaging box that has been widely used in the past.

FIG. 1 shows an example of the shape of a packaging box 11 according to the present invention, and the lower part of the figure shows a cross-sectional structure. This packaging box 11 has a rectangular parallelepiped shape and is used to accommodate a total of six contents T1. Note that the content T1 here is a bottle B filled with drinking water, a cap C is fitted onto the top of the bottle B, and six bottles are housed in the packaging box 11 without loosening. Furthermore, the packaging box 11 has a structure in which an internal space S in which the contents T1 are accommodated is surrounded by four side plates 31 and 32, of which one pair of side plates 32 facing each other is long laterally, and the remaining one pair of side plates 31 is long. A handle hole 37 is provided in the laterally short side plate 31. Furthermore, the lower part of the internal space S is closed with a bottom plate 22.

The handle hole 37 functions as a handle when carrying the packaging box 11, and when cutting out the plate material constituting the packaging box 11, a U-shaped cut is made in the upper center of the side plate 31. Here, this cut is referred to as the cutting line 35, and the inside thereof is referred to as the handle plate 36, but since the cutting line 35 is not ring-shaped but U-shaped, the section connecting the upper ends is The handle plate 36 can swing around this section. By pushing the handle plate 36 toward the internal space S, a handle hole 37 is formed inside the cutting line 35, and by inserting a finger into the handle hole 37, the packaging box 11 can be carried.

The upper part of the internal space S is closed by a set of upper outer flaps 42 connected to the upper ends of the laterally long side plates 32 and a set of upper inner flaps 51 connected to the upper ends of the laterally short side plates 31. In that case, first the upper inner flap 51 is folded, and then the upper outer flap 42 is folded, but the set of upper outer flaps 42 is ensured to have a size that completely closes the internal space S. On the other hand, the upper inner flap 51 has a tapered triangular shape rather than a simple rectangular shape, and in consideration of convenience during use, the base fold line 52 and the front fold line 54 are processed at the manufacturing stage. The area between the partial fold line 52 and the front fold line 54 is referred to as a root area 53, and the tip of the front fold line 54 is referred to as a front area 55. The root region 53 is arranged so as to be inclined downward from the upper end of the side plate 31 when the upper inner flap 51 is closed. On the other hand, the front region 55 has the same height as the bottom surface of the cap C of the content T1 and is arranged substantially horizontally.

Arc-shaped engaging portions 57 are provided on the left and right sides of the forward region 55. The engaging portion 57 functions as a restraint means for restricting movement of the front region 55 and the like, and in this figure, the engaging portion 57 is brought into contact with the bottom surface of the cap C. As a result, the front region 55 cannot move above the bottom surface of the cap C, and the distance from the upper outer flap 42 is maintained. The engaging portions 57 are disposed on the left and right sides of the front region 55, and both fit into the bottom surface of the cap C, so that movement of the front region 55 is regulated in a stable state. In addition, a cutout-like relief portion 56 is provided at the center of the front region 55. The relief portion 56 plays the role of passing through the handle plate 36 as well as an inserted finger. Therefore, the relief portion 56 has a width corresponding to the handle plate 36.

In the lower part of FIG. 1, the upper inner flap 51 is bent and the engaging part 57 is fitted into the bottom surface of the cap C, and the root region 53 of the upper inner flap 51 is inclined downward from the upper end of the side plate 31. A front region 55 protrudes horizontally at the tip thereof, and an engaging portion 57 located at the outer edge of the front region 55 fits into the bottom surface of the cap C. Note that the bottle B is housed in the internal space S without any gaps, and does not move in the horizontal direction. Therefore, it is impossible for the engaging portion 57 to separate from the cap C, and the front region 55 will not naturally move upward.

When the handle plate 36 is pushed toward the internal space S, it will eventually protrude substantially horizontally and come into contact with the end of the root region 53. Therefore, the handle plate 36 cannot be moved higher than this. As a result, when a finger is inserted into the handle hole 37, the finger and the handle plate 36 come into surface contact over a wide range, so that the pressure acting on the finger is alleviated. Note that the tip side of the handle plate 36 is bent at the point of contact with the root region 53 and can fit into the relief portion 56, and in addition, a finger can also fit into the relief portion 56. Therefore, when carrying the packaging box 11, the user grasps the upper part of the handle hole 37 with his fingers, and the entire area of the palm side absorbs the load, allowing the packaging box 11 to be carried in a stable state.

Note that the left and right upper inner flaps 51 have the same shape, but in the upper part of FIG. It protrudes horizontally near the bottom of the cap C. Further, in the lower part of FIG. 1, both the left and right upper inner flaps 51 are in a state after being bent, and their engaging portions 57 are fitted into the bottom surface of the cap C.

FIG. 2 shows the packaging box 11 of FIG. 1 in a state before the upper inner flap 51 is bent, and depicts its cross-sectional structure and overall shape. As shown in the upper right of this figure, the lower part of the internal space S has a structure in which a bottom plate 22 extending from a laterally long side plate 32 and a bottom plate 21 extending from a laterally short side plate 31 overlap. Further, the inside of the cutting line 35 becomes the handle plate 36, which is initially lined up with the side plate 31 without any difference in level, and prevents foreign matter from entering the internal space S. However, if the handle plate 36 is pushed toward the internal space S with a finger or the like, it can be easily moved. In addition, the content T1 has a structure in which a cap C is fitted into the neck of the bottle B, and the diameter of the cap C is larger than that of the neck of the bottle B, resulting in a step.

FIG. 3 shows the packaging box 11 of FIG. 1 after the upper inner flap 51 is folded; the upper part of the figure shows the state before the content T1 is accommodated, and the lower part of the figure shows the state after the content T1 is accommodated. . When the base fold 52 of the upper inner flap 51 is folded largely, the base region 53 becomes downwardly inclined, and when the front fold 54 is further folded in the opposite direction, the front region 55 becomes almost horizontal. Note that the height of the front region 55 in this state needs to be determined depending on the shape of the content T1.

As shown in the lower part of this figure, when storing the contents T1 in the internal space S, the engaging portion 57 of the front region 55 is brought into contact with the bottom surface of the cap C to restrict the movement of the upper inner flap 51. In addition, although three contents T1 are lined up in the figure, they are accommodated in the internal space S without loosening, so they will not move carelessly, and even when violent shaking is applied during transportation, etc. The engaging portion 57 never separates from the cap C.

FIG. 4 shows a state in which the contents T1 are stored in the packaging box 11 of FIG. 1 and the handle plate 36 is further pushed in, and its cross-sectional structure and overall shape are depicted. When the handle plate 36 is pushed in, a portion of the handle plate 36 eventually comes into contact with the root region 53, and further movement is restricted, so that the handle plate 36 protrudes generally in the horizontal direction. Therefore, when a finger is inserted into the handle hole 37 in order to carry the packaging box 11, the finger and the handle plate 36 come into surface contact over a wide range, and the pressure acting on the finger is alleviated. Moreover, the movement of the upper inner flap 51 is restricted by the contents T1, and even when the load from the handle plate 36 is transmitted to the root region 53, the load is received by the root region 53, and the handle plate 36 is greatly deformed. There's nothing to do.

The distal end side of the handle plate 36 enters into the relief part 56 of the distal region 55. The relief portion 56 has a size that allows the handle plate 36 to pass through, and deformation of the handle plate 36 is not restricted within the relief portion 56. Therefore, when carrying, by inserting a finger into the relief part 56 and further bending the finger, the upper part of the handle hole 37 can be grasped with the finger, and the packaging box 11 can be held in a stable state. By providing the relief portion 56 in this manner, the physical burden can be further reduced.

FIG. 5 shows an example of the shape of the packaging box 12 having a configuration different from that in FIG. 1, and is configured to accommodate only one large-sized content T2. This content T2 is a large bottle B for supplying drinking water to a water server, and the packaging box 12 has a size that can accommodate the content T2 without any gaps, and is square when viewed from directly above. The side plates 31 and 32 adjacent to each other across the corner have the same size, but the upper inner flap 51 is connected to the upper end of one of the side plates 31, and the upper inner flap 51 is connected to the upper end of the remaining side plate 32. An upper outer flap 42 is connected. Furthermore, the side plate 31 connected to the upper inner flap 51 has a cut line 35 cut into a U-shape, and the inside thereof becomes a handle plate 36, and by pushing the handle plate 36, a handle hole 37 is formed. It is formed.

In this packaging box 12 as well, the basic structure of the upper inner flap 51 is the same as that in FIG. area 55, and a cutout-shaped relief part 56 is provided in the center of the front area 55. When the upper inner flap 51 is closed, the root region 53 is arranged so as to be inclined downward from the upper end of the side plate 31, and the front region 55 projects horizontally at the tip thereof. Further, the outer edge of the tip of the forward region 55 serves as an engaging portion 58 . The engaging portion 58 fits into the bottom surface of the cap C of the content T2, and functions as a restraint means for restricting movement of the upper inner flap 51. In addition, the relief portion 56 is sized to allow the handle plate 36 to fit therein.

FIG. 6 shows the packaging box 12 of FIG. 5 containing the contents T2, with the upper part of the figure showing the state before the handle plate 36 is pushed in, and the lower part of the figure showing the state after the handle plate 36 is pushed in. After the contents T2 are stored in the packaging box 12, the upper inner flap 51 is closed, its base region 53 is inclined, and its forward region 55 is made to protrude horizontally, and the engaging portion 58 at the tip thereof is made to incline. When fitted into the bottom surface of the cap C, movement of the front region 55 and the root region 53 is restricted. Therefore, when the handle plate 36 is pushed in, a portion of the handle plate 36 eventually comes into contact with the end of the root region 53, and further movement is restricted. However, the portion that enters the relief portion 56 is not subject to regulations. Therefore, when the handle plate 36 is further pushed in with the inserted finger, the handle plate 36 bends at the point of contact with the root region 53 and enters the relief part 56, but at this time, the upper part of the handle hole 37 is in a state of being gripped. , the packaging box 12 is held in a stable state and can be carried smoothly.

FIG. 7 shows an example of the shape of the packaging box 13 having a configuration different from that in FIGS. 1 and 5, in which a tongue piece 65 is provided near the center of the upper inner flap 61. Note that the details of the tongue piece 65 are illustrated at the bottom of the figure. In this packaging box 13 as well, the internal space S is surrounded by side plates 31 and 32, and the lower part thereof is closed by the bottom plate 22. In addition, the side plate 31 that connects to the upper inner flap 61 is machined with a cut line 35. The inside of the handle plate 36 becomes the handle plate 36, and the handle hole 37 is formed by pushing the handle plate 36, and a base crease 62 is formed at the base of the upper inner flap 61. However, as shown in the previous figures, the upper inner flap 51 does not have a base region 53 and a front region 55, but instead has a tongue piece 65, which restricts the movement of the handle plate 36. It functions as a falling area.

The tongue piece 65 is separated from its surroundings by a cut-like partition line 63, and its shape is a band-like shape extending from the base of the upper inner flap 61 toward the tip. A constricted portion 64 that enters the center side is provided and has a zigzag shape. By pushing down the tongue piece 65, it can come into contact with the handle plate 36 and its movement can be restricted. However, the tongue piece 65 is not simply pushed down, but rather bends its middle part to form a dogleg shape. Make it look like it's turned sideways.

After pressing down the tongue piece 65, the cross section along the division line 63 is exposed, and the protruding surface 67, which is a part of this cross section, acts as a restraining means for restricting the movement of the tongue piece 65. functions as The protruding surface 67 cannot be freely arranged, but is limited to a location corresponding to the outer edge of the constricted portion 64 and facing the base of the tongue piece 65. When the tongue piece 65 is actually pushed down and bent and its tip is brought into contact with the protruding surface 67, the tongue piece 65 maintains the bent state in a dogleg shape. Furthermore, when the upper outer flap 42 is closed, the tongue piece 65 is prevented from being pushed up, and even when an upward load is applied to the tongue piece 65 from the handle plate 36, it is received without being deformed. Note that since the tip of the tongue piece 65 is separated from the constriction part 64, a width that allows the tip to come into contact with the protruding surface 67 is ensured. In addition, the two opposing upper inner flaps 61 in the figure have the same shape.

FIG. 8 shows a state in which the tongue piece 65 of the packaging box 13 of FIG. 7 is bent, with the upper part of the figure being before the handle plate 36 is pushed in, and the lower part of the figure being after being pushed in. When the tongue piece 65 is bent into a dogleg shape and its tip is brought into contact with the protruding surface 67, the tongue piece 65 maintains its shape. Further, the tongue piece 65 is arranged above the handle plate 36, and the pushed-in handle plate 36 eventually comes into contact with the tongue piece 65 as shown in the lower part of the figure. At this time, since the handle plate 36 protrudes substantially horizontally, the contact area with the fingers increases, and the pressure acting on the fingers is alleviated. Note that since the upper outer flap 42 is actually closed, the movement of the tongue piece 65 is restricted, and even when the tongue piece 65 comes into contact with the handle plate 36, the upward load can be received.

11 Packaging box (the restraint means is the engagement part, the contents are 6 small bottles)
12 Packaging box (the restraining means is the engaging part, the contents are one large bottle)
13 Packaging box (restraint means is the protruding surface)
21 Bottom plate (the one located above when folded)
22 Bottom plate (the one located at the bottom when folded)
31 Side plate (upper inner flap is connected to its upper end)
32 Side plate (upper outer flap is connected to its upper end)
35 Cutting line (cut)
36 Handle plate 37 Handle hole 42 Upper outer flap 51 Upper inner flap 52 Base fold 53 Root region 54 Front fold 55 Front region 56 Relief portion 57 Engagement portion (restraint means)
58 Engagement part (restraint means)
61 Upper inner flap 62 Base fold line 63 Compartment line (cut)
64 Neck part 65 Tongue piece 67 Projecting surface (restraint means)
B Bottle C Cap S Internal space T1 Contents (large bottle)
T2 Contents (small bottle)

Claims (2)

A plurality of side plates (31, 32) arranged to surround an internal space (S) in which various contents (T1 or T2) are accommodated, and a bottom plate (21, 22) that closes the lower part of the internal space (S). ), an upper inner flap (51 or 61) and an upper outer flap (42) that close the upper part of the internal space (S),
The two side plates (31) facing each other with the internal space (S) in between are provided with a cut line (35) in the form of a cut to form a handle hole (37). The inside of the area surrounded by 35) becomes a handle plate (36), and the upper inner flap (51 or 61) is connected to the upper end of the side plate (31) where the handle plate (36) is placed. ,
The upper inner flap (51 or 61) is provided with a falling area that falls below the upper end of the side plate (31) when the internal space (S) is closed, and the falling area is forced upward by a restraining means. can regulate movement to
The handle plate (36) pushed toward the internal space (S) comes into contact with the falling area, thereby restricting upward movement of the handle plate (36),
The upper inner flap (51) includes a root region (53) arranged so as to be inclined downward when the inner space (S) is closed, and a generally horizontal portion at the tip of the root region (53). a leading region (55) arranged in the direction, and the falling region is the tip of the root region (53) or the entire leading region (55),
The restraint means is an engaging portion (57) located at the outer edge of the forward region (55) and fitted into a step formed in the content (T1 or T2). The handle structure of the packaging box. A plurality of side plates (31, 32) arranged to surround an internal space (S) in which various contents (T1 or T2) are accommodated, and a bottom plate (21, 22) that closes the lower part of the internal space (S). ), an upper inner flap (51 or 61) and an upper outer flap (42) that close the upper part of the internal space (S),
The two side plates (31) facing each other with the internal space (S) in between are provided with a cut line (35) in the form of a cut to form a handle hole (37). The inside of the area surrounded by 35) becomes a handle plate (36), and the upper inner flap (51 or 61) is connected to the upper end of the side plate (31) where the handle plate (36) is placed. ,
The upper inner flap (51 or 61) is provided with a falling area that falls below the upper end of the side plate (31) when the internal space (S) is closed, and the falling area is forced upward by a restraining means. can regulate movement to
The handle plate (36) pushed toward the internal space (S) comes into contact with the falling area, thereby restricting upward movement of the handle plate (36),
The falling area is a tongue piece (65) partitioned by a cut-shaped division line (63) formed in the upper inner flap (61), and the tongue piece (65) is bent into a dogleg shape. By doing so, the middle part thereof falls downward, and a constriction part (64) is provided in the middle of the partition line (63) that enters toward the center of the tongue piece (65).
The restraining means is a protruding surface (67) provided on a cross section formed by the tongue piece (65) falling downward, and the protruding surface (67) is located at the outer edge of the constricted portion (64). A handle structure for a packaging box, characterized in that the tip side of the bent tongue piece (65) contacts the protruding surface (67) to maintain its bending.

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